EP0138747A1 - Parabolic strip element for elongated lamps - Google Patents
Parabolic strip element for elongated lamps Download PDFInfo
- Publication number
- EP0138747A1 EP0138747A1 EP84730107A EP84730107A EP0138747A1 EP 0138747 A1 EP0138747 A1 EP 0138747A1 EP 84730107 A EP84730107 A EP 84730107A EP 84730107 A EP84730107 A EP 84730107A EP 0138747 A1 EP0138747 A1 EP 0138747A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- webs
- transverse
- transverse webs
- element according
- longitudinal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
Definitions
- the invention relates to a parabolic lamella element for elongated light sources according to the preamble of the main claim.
- Such lamella elements are used in particular for shading or glare control with elongated light sources such as. B. fluorescent lamps, cold cathode lamps or the like. And are usually made of plastic or light metal with a mirrored or colored, preferably white surface. While the longitudinal and transverse glare control can be carried out constructively without major difficulties, this is not the case with the equally important diagonal glare control. So far, this problem has not been mastered.
- the invention is therefore based on the object to provide a reliable diagonal glare in the direction of view in addition to an optimal longitudinal and transverse glare control in a lamella element of the type mentioned.
- the lamp elements consist of longitudinal webs 1 and transverse webs (slats) 2.
- the slat elements are equipped with a locking mechanism 4 made of plastic or metal and can can be clipped into sheet metal or aluminum channels without tools.
- the longitudinal webs 1 are parabolic or cylindrical in shape or wound in stages; however, in extreme cases, as indicated at 11, they can also run straight.
- the transverse webs 2 are designed approximately parabolically on the outside and are concave at the upper edges 7. They are also for. Material saving cut out at 12 V-shaped. This measure prevents disturbing reflections from a light source 3 in the interior of the lights from the upper edge of the lamella 7. This glare-free effect can be enhanced by keeping the V-cutouts 12 black on the inside.
- the lower edges of the transverse webs 2 can have a straight shape 5 or a convex shape 8 or, like the upper edges 7, also have a concave shape 6.
- the transverse web leaf height increases sharply from the central region AB to the side regions (FIGS. 2 and 6), as does the leaf thickness b1 to b 2 (FIGS. 3, 4, 7, 8) from the inside to the outside increases.
- the light passage openings 10 in FIGS. 1 and 5 are convex in shape.
- the parabolically approximately cylindrical or straight design of the longitudinal webs 1, 11 and the transverse webs (lamellae) 2 produces a predetermined cut-off angle ⁇ of the light source 3 in the longitudinal direction (FIG. 9) and in the transverse direction (FIG. 10 ⁇ and ⁇ ; FIG. 11 ⁇ and 1).
- the light source 3 is shown in FIG. 10 and in FIG. 11 Glued to the transverse direction with the angle ⁇ , the transverse reflection of the light source 3 takes place via the mirrored or white parabolically shaped (approximately cylindrical) surface 1 with the radiation angle Y.
- the light source is glare-free at transverse angles ⁇ .
- the longitudinal glare is achieved by the increment "S" (Fig.
- the cut-off angle represented by the points "b" and "b '" in FIGS. 1, 2, 5, 6 is increased to such an extent that that the light source 3 and its mirror images are adequately glare-free even in the diagonal viewing direction.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Optical Elements Other Than Lenses (AREA)
- Resistance Heating (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft ein parabolisches Lamellenelement für langgestreckte Lichtquellen gemäß dem Oberbegriff des Hauptanspruchs.The invention relates to a parabolic lamella element for elongated light sources according to the preamble of the main claim.
Derartige Lamellenelemente dienen insbesondere zur Beschattung bzw. Entblendung bei langgestreckten Lichtquellen wie z. B. Leuchtsto fflampen, Kaltkathodenlampen od. dgl. und sind meistens aus Kunststoff oder Leichtmetall mit verspiegelter oder farbiger, vorzugsweise weißer Oberfläche hergestellt. Während die Längs-und Querentblendung in Blickrichtung konstruktiv ohne größere Schwierigkeiten durchführbar erscheint, ist dies bei der ebenso wichtigen Diagonalentblendung nicht der Fall. Dieses Problem konnte bisher nicht beherrscht werden.Such lamella elements are used in particular for shading or glare control with elongated light sources such as. B. fluorescent lamps, cold cathode lamps or the like. And are usually made of plastic or light metal with a mirrored or colored, preferably white surface. While the longitudinal and transverse glare control can be carried out constructively without major difficulties, this is not the case with the equally important diagonal glare control. So far, this problem has not been mastered.
Der Erfindung liegt daher die Aufgabe zugrunde, bei einem Lamellenelement der eingang erwähnten Art neben einer optimalen Längs- und Querentblendung zusätzlich auch eine zuverlässige Diagonalentblendung in Blickrichtung zu schaffen.The invention is therefore based on the object to provide a reliable diagonal glare in the direction of view in addition to an optimal longitudinal and transverse glare control in a lamella element of the type mentioned.
Diese Aufgabe wird erfindungsgemäß mit den im Kennzeichen des Hauptanspruchs angegebenen Mitteln gelöst.This object is achieved with the means specified in the characterizing part of the main claim.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.
Die Erfindung wird nachstehend anhand von in der Zeichnung dargestellten Ausführungsbeispielen des Erfindungsgegenstandes näher erläutert. Es zeigen
- Fig. 1 eine Unteransicht einer ersten Ausführungsform der Querstege,
- Fig. 2 eine Vorderansicht zu Fig. 1,
- Fig. 3 einen Schnitt gemäß der Linie AB in Fig. 2,
- Fig. 4 einen Schnitt gemäß der Linie CD in Fig. 2,
- Fig. 5 eine Unteransicht einer zweiten Ausführungsform der Querstege,
- Fig. 6 eine Vorderansicht zu Fig. 5,
- Fig. 7 einen Schnitt gemäß Linie AB in Fig. 6,
- Fig. 8 einen Schnitt gemäß Linie CD in Fig. 6,
- Fig. 9 ein Reflektionsschema an einem Teillängsschnitt durch die Blattmitte der Querstege,
- Fig. 10 ein Reflektionsschema zu Fig. 6,
- Fig. 11 ein Reflektionsschema zu Fig. 2.
- 1 is a bottom view of a first embodiment of the crosspieces,
- 2 is a front view of FIG. 1,
- 3 shows a section along the line AB in FIG. 2,
- 4 shows a section along the line CD in FIG. 2,
- 5 is a bottom view of a second embodiment of the crosspieces,
- 6 is a front view of FIG. 5,
- 7 shows a section along line AB in FIG. 6,
- 8 shows a section along line CD in FIG. 6,
- 9 is a reflection diagram on a partial longitudinal section through the center of the sheet of the crosspieces,
- 10 shows a reflection diagram for FIG. 6,
- 11 shows a reflection diagram for FIG. 2.
Die Leuchtenelemente bestehen aus Längsstegen 1 und Querstegen (Lamellen) 2. Die Lamellenelemente sind mit einem Rastmechanismus 4 aus Kunststoff oder Metall ausgerüstet und können werkzeuglos in Blech- oder Aluminiumkanäle eingeclipst werden.The lamp elements consist of
Die Längsstege 1 sind innen parabolisch oder auch zylindrisch oder in Stufen gewickelt geformt; sie können aber auch im Extremfall, wie bei 11 angedeutet, gerade verlaufen. Die Querstege 2 sind außen angenähert parabolisch gestaltet und an den Oberkanten 7 konkav ausgebildet. Außerdem sind sie zur. Materialeinsparung bei 12 V-förmig ausgeschnitten. Durch diese Maßnahme werden störende Reflexe einer Lichtquelle 3 im Innenraum der Leuchten von der Oberkante der Lamelle 7 vermieden. Diese entblendende Wirkung kann dadurch verstärkt werden, daß die V-Ausschnitte 12 innen schwarz gehalten werden.The
Die Unterkanten der Querstege 2 können eine gerade Form 5 oder eine konvexe Form 8 aufweisen oder wie die Oberkanten 7 auch eine konkave Form 6 haben.The lower edges of the
In allen Ausführungsformen nimmt jedoch gemäß der Erfindung die Quersteg-Blatthöhe vom Mittelbereich A-B zu den Seitenbereichen stark zu (Fig. 2 und 6), wie auch die Blattdicke b1zu b2 (Fig. 3, 4, 7, 8) von innen nach außen zunimmt. Die Lichtdurchtrittsöffnungen 10 in Fig. 1 und 5 sind dadurch konvex geformt.In all embodiments, however, according to the invention, the transverse web leaf height increases sharply from the central region AB to the side regions (FIGS. 2 and 6), as does the leaf thickness b1 to b 2 (FIGS. 3, 4, 7, 8) from the inside to the outside increases. As a result, the light passage openings 10 in FIGS. 1 and 5 are convex in shape.
Die parabolisch angenähert zylindrische oder auch gerade Ausbildung der Längsstege 1, 11 und der Querstege (Lamellen) 2 erzeugt einen vorbestimmten Abblendwinkel α der Lichtquelle 3 in Längsrichtung (Fig. 9) und in Querrichtung (Fig. 10 β und γ; Fig. 11 β und 1 ). Die Lichtquelle 3 ist in Fig. 10 und in Fig. 11 in Querrichtung mit dem Winkel β entblendet, die Querreflexion der Lichtquelle 3 erfolgt über die verspiegelte oder weiße parabolisch geformte (in Annäherung zylindrische) Fläche 1 mit dem Abstrahlungswinkel Y . Bei Querwinkeln < β ist die Lichtquelle entblendet. Die Längsentblendung wird erreicht durch das Schrittmaß "S" (Fig. 9) der Querstege 2 sowie durch das parabolisch geformte Lamellenblatt 2 (in Annäherung zylindrisch geformt). Strahlen in Längsrichtung ausgehend vom Punkt "a''"(Fig. 9; Fig. 1; Fig. 5) zum Punkt "a " können nur in WinkeIn # α die Lamelle passieren, alle weiteren Lichtstrahlen 9 in Längsrichtung werden mit Winkeln ν> α reflektiert. Die Lamelle sorgt mit den Winkeln "α " in Längsrichtung und " β" in Querrichtung für die Entblendung der Lichtquelle 3.The parabolically approximately cylindrical or straight design of the
Der Winkel der überaus wichtigen Diagonalentblendung, dargestellt in Fig. 1 und Fig. 5 zwischen den Punkten "b" und ''b' " wird durch folgende Maßnahmen stark vergrößert:
- Die Blatthöhe der Lamellen (Fig. 2 und Fig. 6) nimmt durch die konkave Krümmung der
Oberkante 7 vom Mittelbereich A-B zu den Seitenbereichen C-D stark an Höhe zu, wie das Verhältnis h1 :h2 in Fig. 3 und 4 bzw. 7 und 8 erkennen läßt. In der Ausführung Fig. 2 ist die untere Lamellenform gerade 5 oder zur Verbesserung des Leuchtenbetriebswirkungsgrades konkav 6 ausgeführt.
- The leaf height of the lamellae (FIGS. 2 and 6) increases greatly in height due to the concave curvature of the
upper edge 7 from the central region AB to the side regions CD, like the ratio h 1 : h 2 in FIGS. 3 and 4 and 7 and 8 shows. In the embodiment of FIG. 2, the lower lamella shape is straight 5 or concave 6 to improve the lighting operating efficiency.
Durch diese Maßnahmen wird der durch die Punkte "b" und "b' " in Fig. 1, 2, 5, 6 wiedergegebene Abblendwinkel so weit vergrößert, daß die Lichtquelle 3 und deren Spiegelbilder auch in der diagonalen Blickrichtung hinreichend entblendet sind.By means of these measures, the cut-off angle represented by the points "b" and "b '" in FIGS. 1, 2, 5, 6 is increased to such an extent that that the
Durch die Anhebung der Blatthöhe h zu den Seitenflächen 1 hin wird auch die Blattdicke im oberen Bereich verstärkt, Fig. 3 "b1" zu Fig. 4 "b2 und Fig. 7 "b1" zu Fig. 8 "b 2" . Dadurch entsteht in Fig. 1 und Fig. 5 eine konvexe Durchtrittsöffnung 10, was zur Vergrößerung des Winkels der Diagonalentblendung beiträgt.By increasing the sheet height h towards the
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84730107T ATE32135T1 (en) | 1983-10-18 | 1984-10-05 | PARABOLIC BLADE ELEMENT FOR ELONGED LIGHT SOURCES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19838330299U DE8330299U1 (en) | 1983-10-18 | 1983-10-18 | PARABOLIC BLADE ELEMENT FOR LONG-STRETCHED LIGHT SOURCES |
DE8330299U | 1983-10-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0138747A1 true EP0138747A1 (en) | 1985-04-24 |
EP0138747B1 EP0138747B1 (en) | 1988-01-20 |
Family
ID=6758155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84730107A Expired EP0138747B1 (en) | 1983-10-18 | 1984-10-05 | Parabolic strip element for elongated lamps |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0138747B1 (en) |
AT (1) | ATE32135T1 (en) |
DE (2) | DE8330299U1 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4882662A (en) * | 1987-02-17 | 1989-11-21 | Siemens Aktiengesellschaft | Grid of lamellae for a lamp |
EP0643259A1 (en) * | 1993-09-09 | 1995-03-15 | van Putten, Simon Cornelis | A cross lamella for a light box |
NL9301557A (en) * | 1993-09-09 | 1995-04-03 | Simon Cornelis Van Putten | Transverse lamella for a light box |
NL9302169A (en) * | 1993-12-13 | 1995-07-03 | Simon Cornelis Van Putten | Transverse lamella for a light box |
WO1996025623A1 (en) * | 1995-02-14 | 1996-08-22 | Philips Electronics N.V. | Luminaire |
FR2738623A1 (en) * | 1995-09-13 | 1997-03-14 | Philips Eclairage | Fluorescent light fitting with improved louvred cover |
EP0959295A2 (en) * | 1998-05-19 | 1999-11-24 | Koninklijke Philips Electronics N.V. | Luminaire |
NL1011025C2 (en) * | 1999-01-14 | 2000-07-17 | Juliette Simone Catharina Van | Fluorescent lighting assembly has transverse laminae which have narrow section and provide greater light output than from conventional assembly |
EP1113219A3 (en) * | 1999-12-27 | 2002-02-06 | GEBRUEDER LUDWIG GmbH | Lamp |
GB2369671A (en) * | 2000-12-04 | 2002-06-05 | Steven Peter Webb | Reflector for a linear light source and louvre controller incorporating the same |
WO2003038336A1 (en) * | 2001-11-01 | 2003-05-08 | Koninklijke Philips Electronics N.V. | Luminaire and lamellae grid for this |
WO2003064918A2 (en) * | 2002-01-28 | 2003-08-07 | Koninklijke Philips Electronics N.V. | Luminaire with lambellas, for tubular lamp |
GB2350419B (en) * | 1999-04-13 | 2003-10-01 | Siteco Beleuchtungstech Gmbh | Improvements in or relating to light fittings |
WO2006018285A1 (en) * | 2004-08-16 | 2006-02-23 | Zumtobel Lighting Gmbh. | Raster arrangement |
DE10040501B4 (en) * | 2000-08-18 | 2006-11-30 | Siteco Beleuchtungstechnik Gmbh | Round light, grid for round light and slat for round light |
WO2010121483A1 (en) * | 2009-04-24 | 2010-10-28 | 富昱电机股份有限公司 | Lighting fixture for lamp tube |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024355A (en) * | 1959-12-07 | 1962-03-06 | Willis L Lipscomb | Curved, cellular light control panel |
EP0061526A1 (en) * | 1981-03-27 | 1982-10-06 | Siemens Aktiengesellschaft | Luminaire |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8106507U1 (en) * | 1981-03-07 | 1981-08-27 | Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg | "LUMINAIRE WITH A LONG ELASTIC LAMP AND A MIRROR GRID BELOW IT" |
AT381577B (en) * | 1983-04-08 | 1986-11-10 | Bartenbach Christian | GLARE-FREE LAMP FOR A ROD-SHAPED LIGHT SOURCE |
-
1983
- 1983-10-18 DE DE19838330299U patent/DE8330299U1/en not_active Expired
-
1984
- 1984-10-05 AT AT84730107T patent/ATE32135T1/en not_active IP Right Cessation
- 1984-10-05 EP EP84730107A patent/EP0138747B1/en not_active Expired
- 1984-10-05 DE DE8484730107T patent/DE3468930D1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3024355A (en) * | 1959-12-07 | 1962-03-06 | Willis L Lipscomb | Curved, cellular light control panel |
EP0061526A1 (en) * | 1981-03-27 | 1982-10-06 | Siemens Aktiengesellschaft | Luminaire |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4882662A (en) * | 1987-02-17 | 1989-11-21 | Siemens Aktiengesellschaft | Grid of lamellae for a lamp |
EP0643259A1 (en) * | 1993-09-09 | 1995-03-15 | van Putten, Simon Cornelis | A cross lamella for a light box |
NL9301557A (en) * | 1993-09-09 | 1995-04-03 | Simon Cornelis Van Putten | Transverse lamella for a light box |
NL9302169A (en) * | 1993-12-13 | 1995-07-03 | Simon Cornelis Van Putten | Transverse lamella for a light box |
US5758954A (en) * | 1995-02-14 | 1998-06-02 | U.S. Philips Corporation | Luminaire |
AU700856B2 (en) * | 1995-02-14 | 1999-01-14 | Koninklijke Philips Electronics N.V. | Luminaire |
WO1996025623A1 (en) * | 1995-02-14 | 1996-08-22 | Philips Electronics N.V. | Luminaire |
FR2738623A1 (en) * | 1995-09-13 | 1997-03-14 | Philips Eclairage | Fluorescent light fitting with improved louvred cover |
EP0959295A2 (en) * | 1998-05-19 | 1999-11-24 | Koninklijke Philips Electronics N.V. | Luminaire |
EP0959295A3 (en) * | 1998-05-19 | 2000-08-23 | Koninklijke Philips Electronics N.V. | Luminaire |
NL1011025C2 (en) * | 1999-01-14 | 2000-07-17 | Juliette Simone Catharina Van | Fluorescent lighting assembly has transverse laminae which have narrow section and provide greater light output than from conventional assembly |
GB2350419B (en) * | 1999-04-13 | 2003-10-01 | Siteco Beleuchtungstech Gmbh | Improvements in or relating to light fittings |
US6582099B2 (en) | 1999-12-27 | 2003-06-24 | Ludwig Gmbh Geb | Luminaire for elongate lamp |
EP1113219A3 (en) * | 1999-12-27 | 2002-02-06 | GEBRUEDER LUDWIG GmbH | Lamp |
DE10040501B4 (en) * | 2000-08-18 | 2006-11-30 | Siteco Beleuchtungstechnik Gmbh | Round light, grid for round light and slat for round light |
GB2369671A (en) * | 2000-12-04 | 2002-06-05 | Steven Peter Webb | Reflector for a linear light source and louvre controller incorporating the same |
GB2369671B (en) * | 2000-12-04 | 2005-04-06 | Steven Peter Webb | Reflector for a linear light source and louvre controller incorporating the same |
WO2002046660A1 (en) * | 2000-12-04 | 2002-06-13 | Webb Steven P | Reflector for a linear light source and louvre controller incorporating the same |
US7434965B2 (en) | 2000-12-04 | 2008-10-14 | Steven Peter Webb | Reflector for a linear light source and louvre controller incorporating the same |
WO2003038336A1 (en) * | 2001-11-01 | 2003-05-08 | Koninklijke Philips Electronics N.V. | Luminaire and lamellae grid for this |
WO2003064918A2 (en) * | 2002-01-28 | 2003-08-07 | Koninklijke Philips Electronics N.V. | Luminaire with lambellas, for tubular lamp |
WO2003064918A3 (en) * | 2002-01-28 | 2003-11-13 | Koninkl Philips Electronics Nv | Luminaire with lambellas, for tubular lamp |
WO2006018285A1 (en) * | 2004-08-16 | 2006-02-23 | Zumtobel Lighting Gmbh. | Raster arrangement |
WO2010121483A1 (en) * | 2009-04-24 | 2010-10-28 | 富昱电机股份有限公司 | Lighting fixture for lamp tube |
Also Published As
Publication number | Publication date |
---|---|
DE3468930D1 (en) | 1988-02-25 |
DE8330299U1 (en) | 1984-04-12 |
EP0138747B1 (en) | 1988-01-20 |
ATE32135T1 (en) | 1988-02-15 |
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